scientifantasy

Blend of scientific +‎ fantasy. First attested in 1937.

scientifantasy (uncountable)

1. (dated, fandom slang) Synonym of stfsy. [from 1937]
   • 1937 October, “The Science Fiction League”, in Thrilling Wonder Stories, volume 10, number 2, →OCLC, page 119, column 2:

     A 4 hr. s-f festival attended by 21. Seen were scientifantasy filmementos from Metropolis. Frankenstein, High Treason, Mummy, […]

   • 1977, “The Awards”, in Gahan Wilson, editor, First World Fantasy Awards, Doubleday & Company, page 19:

     Frank Belknap Long A protégé of H. P. Lovecraft's and writer of "scientifantasy" tales for five decades

   • 2013 September [2009], Jeff VanderMeer, edited by George R. R. Martin and Gardner Dozois, Songs of the Dying Earth: Stories in Honor of Jack Vance, Tor Books, →ISBN, page 258:

     In terms of my own writing, the idea of Vance creating or refining “scientifantasy,” or far-future SF that read like fantasy, really resonated.